Answer:
[3+ 1- (2 )]³
Step-by-step explanation:
[3+ 1- (2 )]³= 8
[ 4-2]³=8
[2]³= 8
The smaller brackets around 2 indicate that minus is being multiplied by 2 making it -2. As the signs of 1and 3 are the same i.e + they both are added and the answer is 4. Now 4 has the +ve sign and 2 has the -ve sign so 2 is subtracted from 4 and we get a +ve 2 . Now 2 raise to power 3 gives 8 which is the required number.
Only 2 raised to power 3 gives a 8. any other number like 3 or 1 raise to power does not give an eight.
An arts academy requires there to be 3 teachers for every 57 students and 4 for every 44 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 121 students?
This question is incomplete
Complete Question
An arts academy requires there to be 3 teachers for every 57 students and 4 tutors for every 44 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 121 students?
Answer:
a)19 students per teacher
b)11 students per tutor
c)11 tutors if they have 121 students
Step-by-step explanation:
An arts academy requires there to be 3 teachers for every 57 students and 4 tutors for every 44 students.
a) How many students does the academy have per teacher?
3 teachers for every 57 students
3 teachers = 57 students
1 teacher = x
Cross Multiply
3x = 1 × 57 students
x = 57 students/3
x = 19 students
Hence, we have 19 students per teacher
b) How many students Per tutor?
4 tutors for every 44 students.
4 tutors = 44 students
1 tutor = x students
Cross Multiply
4x = 44 × 1
x = 44/4
x = 11 students.
This means that we have 11 students per tutor
c) How many tutors does the academy need if it has 121 students?
4 tutors for every 44 students.
44 students = 4 tutors
121 students = x
Cross Multiply
x = 121 × 4/44
x = 11 tutors
Hence, the school would need 11 tutors if they have 121 students
Find the slope of the line that passes through the points
(2, 1) and (-1,-1).
Answer: slope = 1 --1 / 2 --1
slope = 2 / 3
Answer:
2/3
Step-by-step explanation:
change in y/change in x
-1-1=-2
-1-2=-3
slope is 2/3
Multiply (3)(-4)(2)
0-48
0-24
24
4
3
What is Becca's speed in miles per hour?
Answer: 3/2
Did this on I ready
The speed of Becca for the given data is 3/2 miles per hour.
What is speed?The distance that an object travels in relation to the amount of time it takes to do so can be used to define speed. In other terms, it is a measurement of an object's motion's speed without direction The term "velocity" refers to the combination of direction and speed.
Given the hiking distance of Becca = 9/10 miles
time taken = 3/5 hours
to find the speed,
speed = distance/time
speed = (9/10) ÷ (3/5)
speed = 9/10 x 5/3
speed = 3/2 miles per hour
Hence the speed of Becca is 3/2 miles per hour.
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Solve the inequality: 4+3n≥1 or -3n>25
Answer:
1. n ≥ -1
2. n < -25/3
Step-by-step explanation:
Two cars are 350 miles apart when they start moving towards each other. The cars are moving with the speeds of 65 mph and 75 mph. How long after they leave will the distance between them be 70 miles?
How long after the cars leave will they be 70 miles apart for the second time?
Answer:
3 hours
Step-by-step explanation:
Angie and Kenny play online video games. Angie buys software and of game play. Kenny buys software and of game play. Each software package costs $. If their total cost is $, what is the cost of one month of game play?
Answer: to be honest its unknown
Step-by-step explanation: there are "$" signs but no numbers
What is the image of (6,-7)(6,−7) after a reflection over the line y=xy=x?
Answer:
are you good at math pls help me
Step-by-step explanation:
Answer: (-7,6)
Step-by-step explanation:
It takes Kelsey 5 hours to make 12 pendants. If she works 8 hours per day for 3 days before the craft fair, can she make enough additional pendants to sell so that she can make a profit of at least $50?
Answer:
From a search on google, the first part of this problem is:
Kelsey has to pay $200 to rent a booth at the craft fair. The materials for each pendant cost $7.80, and she plans to sell each pendant for $13.50. To make a profit, she must make more money than she spends. Kelsey has already made 10 pendants.
We know that:
I takes Kelsey 5 hours to make 12 pendants.
She works 8 hours per day, for 3 days.
then she works a total of 24 hours.
We want to find the number of pendants that she can make in that time, first, how many groups of 5 hours there are in 24 hours?
(24h/5h)
And in each one of those groups, she can make 12 pendants, this means that the total number of pendants that she will make is:
(24h/5h)*12 = 57.6 pendants.
And we should round it down to 57 pendants because 0.6 of a pendant does not make sense.
Now let's calculate the profit.
Remember that the profit is the difference between the revenue and the costs.
The costs will be:
C(x) = $200 + $7.80*x
Where x is the number of pendants that she made.
In these 3 days, she made 57 pendants, plus 10 that she did before, she has 67 pendants, then x = 67.
C(67) = $200 + $7.80*67 = $722.60
And the revenue will be:
R(x) = $13.50*x
for the 67 pendants:
R(67) = $13.50*67 = $904.50
Then the profit will be:
P = R - C = $904.50 - $722.60 = $181.90
So yes, her profit will be a lot more than the minimal of $50 asked in the question.
Felipe is planning a party. He has $50.00 to spend on sandwiches that cost $2.50 per person, $25.00 to spend on drinks that cost $1.50 per person, and $25.00 to spend on gift bags that cost $3.00 per person. Which expression could be used to show the amount of money he will have left over if x people attend the party? 50 + 7 x 100 minus 7 x 2.50 x + 1.50 x + 3.00 x 100 minus (2.50 x minus 1.50 x minus 3.00 x)
Answer:
100-7xStep-by-step explanation:
given data
amount for sandwiches=$50
amount for drinks is $25
amount for gift bags=$25
total amount=$100
the number of persons be x
cost of sandwiches= 2.5x
cost of drinks= 1.5x
cost of bags =3x
therefore the total cost is
2.5+1.5+3=$7
the balance is
total amount -total cost
Balance=100-7x
Answer:b
Step-by-step explanation: I took the test :3
generally speaking, these are numbers we usually apply in real world
Answer:
Imaginary numbers, also called complex numbers, are used in real-life applications, such as electricity, as well as quadratic equations.
Step-by-step explanation:
Chang is putting money into a savings account. He starts with $450 in the savings account, and each week he adds $60.
Let S represent the total amount of money in the savings account (in dollars), and let W represent the number of weeks Chang has been adding money. Write an equation relating S to W. Then use this equation to find the total amount of money in the savings account after 13 weeks.
Answer: S: $450
W: $780
so $450+$780 =$1230
the answer is $1230
Step-by-step explanation:
Only answer if you know please don’t just guess
Answer: A. A number squared plus twenty-two.
Step-by-step explanation: I am pretty sure this is right like 99.99999999999% sure.
help please someone!!!
the correct answer is y=5
Answer:
The correct answer Is y=5 i belive
Step-by-step explanation: Hope dis helped UWU :3 Meme for u
could anyone help me with this (will mark brainly)
Answer: Put 1/2 on " A " ( 2/2 On B ) 2/4 on C ( 4/4 on D but label them EFGH
Step-by-step explanation:
Graph the Linear Function g(x) = x + 7
please show the table and graph points! i will give a brainliest!!
√20
A. 6
B. 2√5
Which one?
Answer:
B
Step-by-step explanation:
√20
√(5×4)
√5 ×√4
2√5
Answer:B
3) Solve the equation (x - 1)2 + 2 = x+3.
Answer:
x = 3
Step-by-step explanation:
(x - 1)2 + 2 = x + 3
~Distribute left side
2x - 2 + 2 = x + 3
~Combine like terms
2x = x + 3
~Subtract x to both sides
x = 3
Best of Luck!
Answer:
x is 3 I hope it helps. (if it really helps then I would aprecciate a brainlest)
Step-by-step explanation:
(x - 1)2 + 2 = x + 3 then 2x - 2 + 2 = x + 3 then 2x = x + 3 x=3Edward purchased his home for $89,000. For the first three years after he moved in the real estate market was very lively, so his property value grew by 4.8% every year. For the next five years, the market slowed down somewhat, and his property value grew by 2.6% every year. How much had the value of Edward's home increased after eight years, to the nearest hundred dollars?
a. $25.700
b. $27.500
c. $30,000
d. $13,200
Answer:
b
Step-by-step explanation:
After eight years, the value of Edward's home increased by $24,386.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
We have to given that;
Edward purchased his home for $89,000.
For the first three years after he moved in the real estate market was very lively, so his property value grew by 4.8% every year.
And, For the next five years, the market slowed down somewhat, and his property value grew by 2.6% every year.
Now,
After three years, the value of Edward's home increased by,
⇒ 3 × (4.8% of $89,000)
⇒ 3 × (4.8/100 × 89,000)
⇒ 3 × 4,272
⇒ $12,816
And, After five years, the value of Edward's home increased by,
⇒ 5 × (2.6% of $89,000)
⇒ 5 × (2.6/100 × 89,000)
⇒ 5 × 2,314
⇒ $11,570
Thus, After eight years, the value of Edward's home increased by,
⇒ $12,816 + $11,570
⇒ $24,386
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solve the problem below
123-20+8,098*67^8
Explain your answer
Answer:
3.28833605E+18 (Scientific Notation, for example, aE+b = a × 10^b) [ 3,288,336,052,853,678,818 ]
Step-by-step explanation:
123-20+8,098*67^8 =
(123 - 20) + (8,098 × 67^8)
103 + (8,098 × 67^8)
103 + 3,288,336,052,853,678,715 [3.28833605285367815E+18] =
3,288,336,052,853,678,818 [3.28833605285367815E+18]
≈ 3.28833605E+18
This is due to the order of operations, that defines the mathematical steps to solve arithmetic problems. This is known as PEMDAS (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction).
So each part of the expression must be worked out in a certain order to get the correct answer.
y = 5e2 +20
work out the value of y when e = -3
Answer:
y=65
Step-by-step explanation:
y=5*-3 squared+20
y=5*-3*-3+20
y=5*+9[-*- is +]+20
y=5*9+20
y=45+20
y=65
Mrs. Raditz pays you $2 per hour to babysit her perfect and adorable little children (aren't you lucky!).
You babysit for 4 hours. How much money do you make? Write a mathematical expression and simplify and
state the final answer.
Answer:
$8
Step-by-step explanation:
2 x 4 = 8
Answer:
8
Step-by-step explanation:
2x4=8
Juanita borrowed $600 to purchase a new computer. She
was charged 7% interest for two years. She used the
simple interest formula to find the interest.
1 = 600(7)(2)
What error did Juanita make and how will her error affect
the interest she calculates? Explain.
Answer:
Sample response:Juanita did not change the 7% to the decimal 0.07. When she completes the problem as written, the interest will be greater than the money she borrowed.
Step-by-step explanation:
its right trust me
perry connects a blue garden hose and a green garden hose to make a long hose.The blue hose is 17.5 feet.The green garden is 15.75.How long is the hose combined
Answer:
33.25
Step-by-step explanation:
Rewrite 3^-7 using a positive exponent.
Answer:
1/3^7
Step-by-step explanation:
Negative exponents go to the denominator
The positive exponent for the given exponent is [tex]\frac{1}{3^7}[/tex].
The given exponent is [tex]3^{-7}[/tex].
What is an exponent?The exponent of a number shows how many times the number is multiplied by itself.
A positive exponent tells us how many times to multiply a base number, and a negative exponent tells us how many times to divide a base number.
Now, [tex]3^{-7}=\frac{1}{3^7}[/tex] (∵[tex]a^{-n}=\frac{1}{a^n}[/tex])
Therefore, the positive exponent for the given exponent is [tex]\frac{1}{3^7}[/tex].
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This is pretty easy but I’m just bad at explaining it if u know ur inequalities please help.
4(15)+7) Plz help
HURRY
Answer: 88
Step-by-step explanation:
First use the distributive property.
4(15 + 7) can turn into 4(15) + 4(7)
Then we simplify until we get the answer.
4(15) = 60
4(7) = 28
Then it is...
60 + 28
Just add them together...
60 + 28 = 88
So the answer is 88. I hope this helps, and I hope it's not wrong, but I do not think it is.
Which expression is equivalent to 24 - (-6)
Answer:
24 + 6
this is the correct answer
Explaination:
the subtraction sign cancalles out the negative in front of the 6
What is the value of y in the equation 3/4(2y + 4) = 30 ?
7.) Write the equation of a line in slope intercept form through the point (3, 1) and parallel to y = -⅓ x +4
(show all work)